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Old November 20th 05, 06:50 PM posted to rec.radio.amateur.antenna
Richard Harrison
 
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Default feedlines and strange intereactions

Paladin wrote:
"I just haven`t found the right person who will help."

Help, it seems, is the answer Paladin wants to hear. When you want to
put 8 pounds of crap in a 4-pound bag, life is often that way. You
quickly run out of good advice.

When a respondent says there`s no computer program to tell you how to
linearly-load an antenna wire, you are invited to prove him wrong. The
ARRL Antenna Book says:
"Since the dimensions and spacing of linear-loading devices vary greatly
from one antenna to another, the best way to employ this technique is to
try a length of conductor 10% to 20% longer than the difference between
the shortened antenna and the full-size dimension for the linear-loading
device. Then use te "cut-anhd-try" method, varying both the spacing and
length of the loading device to optimize the match."

You might write a program for that.

Best regards, Richard Harrison, KB5WZI

 
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